package homework_07.home_02;

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Calculater {
    public static void main(String[] args) {
        System.out.println("请输入您要计算的类型：");
        Scanner in = new Scanner(System.in);
        String a= in.nextLine();
        Pattern pattern = Pattern.compile("/d/d{1,}");
        Matcher matcher = pattern.matcher(a);
    }
}
